记录asp.net网站停止运行原因的代码

记录网站是什么原因导致停止运行还是有必要的，下面是具体的实现方式。

                PRotected void application_End(object sender, EventArgs e)        {            RecordEndReason();        }        /// <summary>        /// 记录网站停止运行原因        /// </summary>        protected void RecordEndReason()        {            HttpRuntime runtime = (HttpRuntime)typeof(System.Web.HttpRuntime).InvokeMember("_theRuntime", System.Reflection.BindingFlags.NonPublic | System.Reflection.BindingFlags.Static | System.Reflection.BindingFlags.GetField,                null,                null,                null);            if (runtime == null)                return;            string shutDownMessage = (string)runtime.GetType().InvokeMember("_shutDownMessage",                System.Reflection.BindingFlags.NonPublic | System.Reflection.BindingFlags.Instance | System.Reflection.BindingFlags.GetField,                null,                runtime,                null);            string shutDownStack = (string)runtime.GetType().InvokeMember(                "_shutDownStack",                System.Reflection.BindingFlags.NonPublic | System.Reflection.BindingFlags.Instance | System.Reflection.BindingFlags.GetField,                null,                runtime,                null);            string reasonString="网站Application_End，停止运行,shutDownMessage=" + shutDownMessage + ",shutDownStack=" + shutDownStack;            LogHelper.WriteErrorLog(reasonString,null);            LogHelper.WriteSmtp(reasonString, null);            //以下方法将重启的原因和重启时的堆栈信息记录到了windows的事件查看器中,当然你也可以记录到文本文件中。            //EventLog log = new EventLog();            //log.Source = "ASP.NET 2.0.50727.0";            //log.WriteEntry(String.Format("/r/n/r/n_shutDownMessage={0}/r/n/r/n_shutDownStack={1}", shutDownMessage, shutDownStack), EventLogEntryType.Information);        }

效果截图